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2009-07-02Use ctz64 in favor of ffsllJan Kiszka
Not all host platforms support ffsll. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2009-07-01Suppress a GCC warningBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-06-29KVM: x86: Refactor persistent CPU stateJan Kiszka
This patch aligns the KVM-related layout and encoding of the CPU state to be saved to disk or migrated with qemu-kvm. The major differences are reordering of fields and a compressed interrupt_bitmap into a single number as there can be no more than one pending IRQ at a time. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29preserve the hypervisor bit while KVM trims the CPUID bitsAndre Przywara
The KVM kernel will disable all bits in CPUID which are not present in the host. As this is mostly true for the hypervisor bit (1.ecx), preserve its value before the trim and restore it afterwards. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29remove CPUID host hacksAndre Przywara
KVM provides an in-kernel feature to disable CPUID bits that are not present in the current host. So there is no need here to duplicate this work. Additionally allows 3DNow! on capable processors, since the restriction seems to apply to QEMU/TCG only. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29fix KVMs GET_SUPPORTED_CPUID feature usageAndre Przywara
If we want to trim the user provided CPUID bits for KVM to be not greater than that of the host, we should not remove the bits _after_ we sent them to the kernel. This fixes the masking of features that are not present on the host by moving the trim function and it's call from helper.c to kvm.c. It helps to use -cpu host. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29CPUID Fn8000_0001.EAX is family/model/stepping, not featuresAndre Przywara
Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29introduce -cpu host targetAndre Przywara
Although the guest's CPUID bits can be controlled in a fine grained way in QEMU, a simple way to inject the host CPU is missing. This is handy for KVM desktop virtualization, where one wants the guest to support the full host feature set. Introduce another CPU type called 'host', which will propagate the host's CPUID bits to the guest. Unwanted bits can still be turned off by using the existing syntax (-cpu host,-skinit) Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29allow hypervisor CPUID bit to be overridenAndre Przywara
KVM defaults to the hypervisor CPUID bit to be set, whereas pure QEMU clears it. On some occasions one wants to set or clear it the other way round (for instance to get HyperV running inside a guest). Move the bit-set to be done before the command line parsing and enable it by default. One can disable it by using: -cpu qemu64,-hypervisor Fix some whitespace damage on the way. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-22Handle init/sipi in a main cpu exec loop. (v2)Gleb Natapov
This should fix compilation problem in case of CONFIG_USER_ONLY. Currently INIT/SIPI is handled in the context of CPU that sends IPI. This patch changes this to handle them like all other events in a main cpu exec loop. When KVM will gain thread per vcpu capability it will be much more clear to handle those event by cpu thread itself and not modify one cpu's state from the context of the other. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-16QEMU KVM: i386: Fix the cpu reset stateNitin A Kamble
As per the IA32 processor manual, the accessed bit is set to 1 in the processor state after reset. qemu pc cpu_reset code was missing this accessed bit setting. Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-16allow CPUID vendor overrideAndre Przywara
KVM-enabled QEMU will always report the vendor ID of the physical CPU it is running on. Allow to override this if explicitly requested on the command line. It will not suffice to name a CPU type (like -cpu phenom), but you have to explicitly set the vendor: -cpu phenom,vendor=AuthenticAMD Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-22x86: Add support for resume flagJan Kiszka
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2009-05-22kvm: x86: Save/restore KVM-specific CPU statesJan Kiszka
Save and restore all so far neglected KVM-specific CPU states. Handling the TSC stabilizes migration in KVM mode. The interrupt_bitmap and mp_state are currently unused, but will become relevant for in-kernel irqchip support. By including proper saving/restoring already, we avoid having to increment CPU_SAVE_VERSION later on once again. v2: - initialize mp_state runnable (for the boot CPU) Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-22kvm: Add missing bits to support live migrationJan Kiszka
This patch adds the missing hooks to allow live migration in KVM mode. It adds proper synchronization before/after saving/restoring the VCPU states (note: PPC is untested), hooks into cpu_physical_memory_set_dirty_tracking() to enable dirty memory logging at KVM level, and synchronizes that drity log into QEMU's view before running ram_live_save(). Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-21Convert machine registration to use module init functionsAnthony Liguori
This cleans up quite a lot of #ifdefs, extern variables, and other ugliness. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-20kvm: work around supported cpuid ioctl() brokennessMark McLoughlin
KVM_GET_SUPPORTED_CPUID has been known to fail to return -E2BIG when it runs out of entries. Detect this by always trying again with a bigger table if the ioctl() fills the table. Signed-off-by: Mark McLoughlin <markmc@redhat.com>
2009-05-13Include assert.h from qemu-common.hPaul Brook
Include assert.h from qemu-common.h and remove other direct uses. cpu-all.h still need to include it because of the dyngen-exec.h hacks Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-05-13Replace gcc variadic macro extension with C99 versionBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-05-08Remove noisy printf when KVM masks CPU featuresAnthony Liguori
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-08kvm: Trim cpu features not supported by kvmAvi Kivity
Remove cpu features that are not supported by kvm from the cpuid features reported to the guest. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-08Fix x86 feature modifications for features that set multiple bitsAvi Kivity
QEMU allows adding or removing cpu features by using the syntax '-cpu +feature' or '-cpu -feature'. Some cpuid features cause more than one bit to be set or cleared; but QEMU stops after just one bit has been modified, causing the feature bits to be inconsistent. Fix by allowing all feature bits corresponding to a given name to be set. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-08Make x86 cpuid feature names available in file scopeAvi Kivity
To be used later. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-08kvm: Add support for querying supported cpu featuresAvi Kivity
kvm does not support all cpu features; add support for dunamically querying the supported feature set. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-04-24qemu: introduce qemu_init_vcpu (Marcelo Tosatti)aliguori
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7242 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-24qemu: per-arch cpu_has_work (Marcelo Tosatti)aliguori
Blue Swirl: fix Sparc32 breakage Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7238 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-23Fix i386-linux-user build (Laurent Desnogues)aliguori
This broke due to r7230. Signed-off-by: Laurent Desnogues <laurent.desnogues@gmail.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7233 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-22put valid data into exit_int_info if needed (Gleb Natapov)aliguori
If fault happened during event delivery exit_int_info should contain valid info about the event on vm exit. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7230 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-22xen: groundwork for xen support (Gerd Hoffmann)aliguori
- configure script and build system changes. - wind up new machine type. - add -xen-* command line options. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7219 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-19kqemu: merge CONFIG_KQEMU and USE_KQEMUblueswir1
Basically a recursive ":%s/USE_KQEMU/CONFIG_KQEMU/g". Signed-off-by: Paul Bolle <pebolle@tiscali.nl> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7189 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-18x86: Enhanced dump of segment registers (Jan Kiszka)aliguori
Parse the descriptor flags that segment registers refer to and show the result in a more human-friendly format. The output of info registers eg. then looks like this: [...] ES =007b 00000000 ffffffff 00cff300 DPL=3 DS [-WA] CS =0060 00000000 ffffffff 00c09b00 DPL=0 CS32 [-RA] SS =0068 00000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =007b 00000000 ffffffff 00cff300 DPL=3 DS [-WA] FS =0000 00000000 00000000 00000000 GS =0033 b7dd66c0 ffffffff b7dff3dd DPL=3 DS [-WA] LDT=0000 00000000 00000000 00008200 DPL=0 LDT TR =0080 c06da700 0000206b 00008900 DPL=0 TSS32-avl [...] Changes in this version: - refactoring so that only a single helper is used for dumping the segment descriptor cache - tiny typo fixed that broke 64-bit segment type names Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7179 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-17kvm: Fix cpuid initialization (Jan Kiszka)aliguori
Fix (more or less) spurious guest boot failures due to corrupted cpuid states. The reason was insufficient initialization of cpuid entries before passing them to the kernel. At this chance also fix improper entry pointer progression and simplify the code a bit. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7167 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-05Add new command line option -singlestep for tcg single stepping.aurel32
This replaces a compile time option for some targets and adds this feature to targets which did not have a compile time option. Add monitor command to enable or disable single step mode. Modify monitor command "info status" to display single step mode. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7004 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-02Immediate versions of ro[lr]malc
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6968 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-28kvm: Drop kvm_patch_opcode_byte (Jan Kiszka)aliguori
As cpu_memory_rw_debug is now capable of modifying ROM, we can drop our own patch function. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6906 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-20x86: Add NULL check to lsl (Jan Kiszka)aliguori
According to the Intel specs, lsl performs a check against NULL for the provided selector, just like lar does. helper_lar() includes the corresponding code, helper_lsl() was lacking it so far. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6863 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-13target-i386: use the new bswap* TCG opsaurel32
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6836 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-13tcg: rename bswap_i32/i64 functionsaurel32
Rename bswap_i32 into bswap32_i32 and bswap_i64 into bswap64_i64 Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6829 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-12Guest debugging support for KVM (Jan Kiszka)aliguori
This is a backport of the guest debugging support for the KVM accelerator that is now part of the KVM tree. It implements the reworked KVM kernel API for guest debugging (KVM_CAP_SET_GUEST_DEBUG) which is not yet part of any mainline kernel but will probably be 2.6.30 stuff. So far supported is x86, but PPC is expected to catch up soon. Core features are: - unlimited soft-breakpoints via code patching - hardware-assisted x86 breakpoints and watchpoints Changes in this version: - use generic hook cpu_synchronize_state to transfer registers between user space and kvm - push kvm_sw_breakpoints into KVMState Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6825 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-07The _exit syscall is used for both thread termination in NPTL applications,pbrook
and process termination in legacy applications. Try to guess which we want based on the presence of multiple threads. Also implement locking when modifying the CPU list. Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6735 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-05Fix cpuid KVM crash on i386 (Lubomir Rintel)aliguori
Cpuid should return into vec, not overwrite past address in count. Changeset 6565 broke this. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6689 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-04Fix "info registers" under kvm.balrog
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6684 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-27x86: use qemu_log_mask on triple faults (Chris Wright)aliguori
replace open coded qemu_log_mask with proper macro Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6649 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-11KVM: cpuid function 2: store all values (Amit Shah)aliguori
Incrementing the array index was missed in the previous series which causes us to not store all the values. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6617 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-09KVM: Get all cpuid values from function 2 (Amit Shah)aliguori
cpuid function 2 can have multiple values to describe cache behaviour. Loop till we have fetched all the values. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6567 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-09KVM: Fetch sub-leaf cpuid values for functions 4, 0xb, 0xd. (Amit Shah)aliguori
CPUID functions 4, 0xb and 0xd have sub-leaf values which depend on the input value of ECX. Store these values as well. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6566 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-09KVM: CPUID takes ecx as input value for some functions (Amit Shah)aliguori
The CPUID instruction takes the value of ECX as an input parameter in addition to the value of EAX as the count for functions 4, 0xb and 0xd. Make sure we pass the value to the instruction. Also convert to the qemu-style whitespace for the surrounding code. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6565 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-05targets: remove error handling from qemu_malloc() callers (Avi Kivity)aliguori
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6530 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-02Add phenom CPU descriptor (Alexander Graf)aliguori
As part of my ongoing effort to make nested SVM useful, I started working to get VMware ESX run inside KVM. VMware couples itself pretty tightly to the CPUID, so it's a good idea to emulate a machine that officially supports SVM and should thus exploit the powers of nested virtualization. This patch adds a Phenom CPU identifier, that resembles a real-world phenom CPU as closely as possible. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6501 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-02Implement FFXSR (Alexander Graf)aliguori
Newer AMD CPUs have the FFXSR capability. This leaves out XMM register in FXSAVE/FXRESTORE when in CPL=0 and 64-bit mode. This is required for Hyper-V. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6500 c046a42c-6fe2-441c-8c8c-71466251a162
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